<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<table border="1" width="1600px">
    <tr><td colspan="3">已登录信息如下</td> </tr>
    <tr><td> 张三 </td>
    <td>男</td>
    <td>18岁</td></tr>
    <tr><td>李四</td>
    <td> 女</td>
    <td>20岁</td></tr>
</table>
</body>
</html>